Corrected fuel flow

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Corrected fuel flow is the fuel flow that is required by an engine if the freestream total head conditions are equivalent to ambient conditions at Sea Level on a Standard Day (i.e. 14.696 lb/in², 288.15K ).

Corrected Fuel Flow can be calculated as follows, assuming Imperial units:

wfe/({\delta}.\sqrt{\theta}) = wfe/[(P/14.696).(\sqrt{T}/\sqrt{288.15})]

So-called Non-Dimensional Fuel Flow (w/({P}.\sqrt{T}) is proportional to Corrected Fuel Flow:

wfe/({P}.\sqrt{T})= [wfe/({\delta}.\sqrt{\theta})] * \sqrt{288.15}/{14.696})

Corrected Fuel Flow (or Non-Dimensional Fuel Flow) is one of several non-dimensional groups associated with gas turbine performance calculations.

The equivalent equations for Preferred SI Units are:

wfe/({\delta}.\sqrt{\theta}) = wfe/[(P/101.325).(\sqrt{T}/\sqrt{288.15})]
wfe/({P}.\sqrt{T})= [wfe/({\delta}.\sqrt{\theta})] * (\sqrt{288.15}/{101.325})

Nomenclature:

  • P Stagnation (or Total) Pressure
  • T Stagnation (or Total) Temperature

References[edit]